al8807 Diodes, Inc., al8807 Datasheet - Page 4

• Manufacturer Part Number: al8807
• Description: High Efficiency Low Emi 30v 1a Buck Led Driver
• Manufacturer: Diodes, Inc.

Typical Performance Characteristics
AL8807
Document Number: DS35281 Rev. 3 - 2
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
2.5
1.5
0.5
400
350
300
250
200
150
100
1
0
50
3
2
1
0
0
Fig. 1 Supply Current (not switching) vs. Input
0
0
0
V
1 LED
L = 68µH
T
A
IN
= 25°C
= 12V
Fig. 5 V
5
Fig. 3 LED Current vs. V
5
(CTRL pin open circuit)
1
CTRL
10
10
Voltage
2
vs Input Voltage
R
V
V
SET
V
CTRL
IN
IN
15
15
(V)
R
= 150mΩ
(V)
SET
(V)
V
V
T
A
= 100mΩ
CTRL
SET
3
= 25°C
20
20
= V
= 0V
R
V
V
T
CTRL
SET
A
IN
CTRL
SET
= 25°C
HIGH EFFICIENCY LOW EMI 30V 1A BUCK LED DRIVER
= 300mΩ
= V
= Open
25
4
25
IN
(T
www.diodes.com
A
= 25°C unless otherwise stated)
30
30
4 of 20
5
-20
-40
-60
80
60
40
20
2.52
2.51
2.50
2.49
2.48
900
800
700
600
500
400
300
200
100
0
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
-40
0
L=33µH
L=68µH
L=100µH
Fig. 2 Switching Frequency vs. V
Fig. 6 V
V
T
-15
A
SET
= 25°C
1
Fig. 4 I
= V
Ambient Temperature (°C)
IN
CTRL
10
= 12V
CTRL
vs. Temperature
2
V
CTRL
V
vs. V
35
CTRL
(V)
V
V
CTRL
CTRL
SET
3
V
1 LED
R
T
A
= V
60
IN
SET
= Open
= 25°C
AL8807
= 12V
© Diodes Incorporated
IN
November 2011
= 150mΩ
= 12V
4
85
CTRL
110
5